import time
import wus
import wux
import sis
import liux
import lius
import six
import sans
import sanx

print('获取资源中',end='')
time.sleep(1)
for i in range(9):
    print('-',end='')
    time.sleep(1)
print('-')

r = {'六年级下册':'liux.liux()','六年级上册':'lius.lius()','五年级下册':'wux.wux()','五年级上册':'wus.wus()','四年级上册':'sis.sis()','四年级下册':'six.six()','三年级上册':'sans.sans()','三年级下册':'sanx.sanx()'}

q = input('请输入今天要听写的年级：')
try:
    exec(r[q])
except Exception as a:
    print('错误提示:',a)